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Evaluate: 320 − {18 + 4 × (21 − 9)}

Question

Evaluate: 320 − {18 + 4 × (21 −

9)}

A 254 Correct Answer Incorrect Answer

B 330 Correct Answer Incorrect Answer

C 425 Correct Answer Incorrect Answer

D 295 Correct Answer Incorrect Answer

Solution

First, bracket ( ): 21 − 9 = 12 Now, multiplication: 4 × 12 = 48 Now, curly bracket { }: 18 + 48 = 66 Finally: 320 − 66 = 254

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